摘要:
An internal combustion engine with an auxiliary combustion chamber is provided with a main combustion chamber for the combustion of an air-fuel mixture, an auxiliary combustion chamber communicating with the main combustion chamber through a passage, such that the ignition of an air-fuel mixture in the auxiliary combustion chamber induces ignition and combustion of the air-fuel mixture in the main combustion chamber, and an intake valve provided in the auxiliary combustion chamber for opening and closing a passage which leads to a fuel supply means. The engine further includes an intake valve lifter having a piston member which is associated with the intake valve and a cylinder member in which such piston member moves, a fluid pressure supply device driven in synchronism with the rotation of the engine to supply a fluid pressure, and a fluid pressure supply passage for feeding the fluid pressure which is supplied by the fluid pressure supply device to the intake valve lifter. Accordingly, the control of the opening and closing operations of the intake valve of the auxiliary combustion chamber can be performed in accordance with any driving conditions by feeding the fluid pressure supplied by the fluid pressure supply device to the intake valve lifter through the fluid pressure supply passage and moving the piston member in synchronism with the rotation of the internal combustion engine.
摘要:
A hydraulic control apparatus is employed in a stepless transmission in which an endless belt is stretched between and wrapped around a pair of pulleys and the velocity ratio between input and output shafts is changed by varying the width of a groove defined in each of the pulleys. Hydraulic pressure supplied from a hydraulic pressure supply source is reduced to necessary levels by first and second adjusting apparatus, respectively, and then sent ot respective cylinder chambers of the pulleys. A controller controls the hydraulic pressure supply source on the basis of either one of the hydraulic pressures respectively reduced by the first and second adjusting apparatus which is higher than the other so that the supply source generates a hydraulic pressure which is sufficiently high to supply the higher hydraulic pressure, thus reducing loss of power in the hydraulic pressure supply source.
摘要:
An electronic control circuit calculates the actual revolution speed ratio between the driving and driven pulleys of the transmission, generates a first electric control signal corresponding to the difference between the actual revolution speed ratio and an aimed revolution speed ratio predetermined for both the pulleys in conjunction with the input torque of the input shaft and required torque for the output shaft, and generates a second electric control signal made of the sum of both an electric signal corresponding to the actual revolution speed ratio and an electric signal corresponding to the difference. A hydraulic control circuit includes a pressure oil source, a first cylinder which is provided on the input shaft and supplied with working oil from the pressure oil source to push a movable member of a driving pulley toward a fixed member thereof, a second cylinder which is provided on the output shaft and supplied with working oil from the pressure oil source to push a movable member of a driven pulley toward a fixed member thereof, a first control valve which is disposed in an oil passage for connecting the pressure oil source and a first cylinder to each other and acts on the basis of the first electric control signal to control the flow rate of the working oil supplied to or drained from the first cylinder, and a second control valve which is disposed in an oil passage for connecting the pressure oil source and the second cylinder to each other and acts on the basis of the second electric control signal to control the pressure of the working oil supplied to the second cylinder.
摘要:
In a device for removing inverter noise, a pair of bus bars extending in parallel are grounded via a pair of capacitors. The capacitors are connected to the bus bars and to a grounding terminal at positions symmetrical to the pair of bus bars. Therefore, the inductance components are balanced from the source of noise to the grounded point, and impedance components are decreased from the two bus bars to a point grounded through the capacitors, making it possible to effectively remove high-frequency noise on the DC bus line of the inverter without requiring a large amount of space.
摘要:
A pressure vibration damping device in a liquid supply passage for supplying a liquid from a pump to a hydraulic device such as a fluid pressure type suspension of a vehicle, including a pressure pulse absorbing means adapted to be able to accept and return a small amount of the liquid from and to said liquid supply passage so as to absorb momentary changes in the flow rate of the liquid in the liquid supply passage, and a liquid column vibration damping means adapted to be able to apply a substantial flow resistance principally to a high velocity flow of the liquid in the liquid supply passage at a part thereof between the pump and the pressure pulse absorbing means, the high flow velocity being due to pulse flows of the liquid induced by a resonance of pulsating output of the pump and the pressure pulse absorbing means and substantially higher than a mean flow velocity of the liquid corresponding to a normal rate of supply of the liquid through the liquid supply passage.
摘要:
In a hydraulic suspension system, a plurality of actuators having working fluid chambers are provided. Each actuator is adapted to increase and decrease vehicle height as the results of the supply and the discharge of working fluid into and from its working fluid chamber, respectively. A plurality of accumulators are connected with associated working fluid chambers. Working fluid supply passages supply working fluid into the working fluid chambers and working fluid discharge passages discharge working fluid from the working fluid chambers. Pressure control devices are provided in the supply passages and the discharge passages. Each pressure control device means is adapted to control the supply of the working fluid into and the discharge from the associated working fluid chamber to adjust the pressure within the chamber. The suspension system further comprises flow resistance control devices. Each flow resistance control devices is adapted to adjust at least one of the first flow resistance between the associated working fluid chamber and the associated accumulator and the second flow resistance of the associated discharge passage in response to the flow rate of the working fluid discharging through the discharge passage so that the higher the discharging flow rate is, the higher the ratio of the second to the first flow resistances may be, not only to reduce the flow rate of the working fluid discharging from the working fluid chamber through the discharge passage but also to increase the flow rate of the working fluid flowing into the accumulator from the working fluid chamber.
摘要:
A speed change control apparatus for an automatic transmission having a plurality of friction elements in which a gear stage is established by engaging one of the friction elements and disengaging one of the others. The speed change control apparatus includes control valves connected to respective ones of the friction elements, a duty solenoid valve connected to each oil line supplying a respective one of the control valves with control hydraulic pressure, and control means for engaging one friction element by outputting an engagement duty signal to one duty solenoid valve to control the control hydraulic pressure, and disengaging one of the other friction elements correspondingly by outputting disengagement duty signals to one of the other duty solenoid valves to control the control hydraulic pressure.
摘要:
Apparatus for controlling the steerable wheels of a power-assisted steering unit of a vehicle in which an angle detector is connected to the power assist unit and to a power controller. An abnormality detector is arranged between the steering shaft of the steering wheel and an output shaft of the angle detector to detect an abnormal state based on relative displacement of the steering shaft and the output shaft of the angle detector to produce a signal which is sent to the power controller. The steering shaft is controlled by the power controller to avoid the abnormal state based on the signal from the abnormality detector, a control signal from an electronic control unit based on steering angle of the wheels and a signal from a sensor detecting steering angle of the steering wheel.
摘要:
A collision discriminating apparatus for vehicles having a collision detection device mounted on a part of the vehicle to detect the deformed amount of a collided portion deformed by collision of a collision object against the vehicle, and a collision object presuming device for presuming what object collided against the vehicle on the basis of the deformed amount of the collided portion detected, and the vehicle speed when the vehicle collided.
摘要:
A pressure control system for suspension delivers a pressure which is proportional to a current level chosen to energize a solenoid of a pressure control valve to a shock absorber of a suspension. A change in the pressure of a return path which supplies a low pressure to the pressure control valve causes the pressure which is applied to the suspension to change. In order to suppress such change, a junction of the pressure control valve with the return path has an orifice interposed therein or is connected to a low pressure accumulator. On the other hand, in the event a depression occurs in the output of the high pressure piping, a cut valve which functions to isolate the suspension from the pressure control valve may be temporarily cut off in response to a pressure fluctuation in the high pressure piping. In order to prevent this, an orifice is interposed between the high pressure piping and a pilot chamber of the cut valve.